There are worse 5-drops to play, so it might be worth running Ultimecia on the off chance you can pay the cost, but I dont think Id go out of my way to pick it in a draft
Three-ofs must at least do something in every major matchup
It has the grossest, scariest creatures, the most efficient removal, and the highest likelihood to tilt an entire table
Now, Sefris certainly makes you jump through some hoops to get there, but with cards like Hama Pashar, Ruin Seeker and Radiant Solar, there's a nice little puzzle to be completed with Sefris
He lived his life in awe of the past, learning what he could from the various ruins
In a format that loves getting into the Red Zone, Stonehorn Dignitary does some work, and is effectively a Fog against one player